Bumper



I. ROSENBERG.

BUMPER.

APPLICATION 'FILED AUG 13, I921- Patenfced @1 25, 1922.

UNITE IRVING ROSENBERG, OF NEW'YORK, N. Y.

BUMPER.

Specification of Letters Patent.

Patented Apr. 25. 1922 To all whom it may concern:

Be it known that I, IRvINc ROSENBERG, a cltizen of the United States, and aresident of the city of New York, borough of Man hattan, in the county. and State of New York-have invented a" new and Improved Bumper, of which the following is a full,

clear, and exact description.

This invention relates to vehicle bumpers and haslfor an object to provide an im' proved construction which may be used on an automobile or other vehicle and which when in use will protect both the vehicle and the object struck.

Another object of the invention is to provide a bumper for vehicles wherein a plurality of springs are provided to present a gradual increasing resistance when the bumper is struck or when the bumper strikes an object. v

A still further object of the invention is to provide a bumper in 'which a plurality of independent coil springs are provided with an improved arrangement of fastening means therefor.

In the accompanying drawing Figure 1 is a perspective view of part of an automobile with the bumper embodying the invention applied thereto.

Figure '2 is a top plan View on, an onlarged scale of the bumper shown in l*ig-' ure 1.-

Figure 3 is an enlarged sectional view through Figure 2 on line Referring to the accompanying drawing by numerals, 1 indicates an automobile of any desired kind. Connected in any suit-' able manner with the automobile is a bumper 2 which is formed of two principal sections, namely, section 3 which acts as a supporting section and section 4 which acts as a cushioning device. The section 3 comprises a bar 5 which may be straight as shown in Figure 2 or curved as desired, said bar merging into loop structures 6 and 7 and said loop structures in .turn merging into securing extensions 8 and 9, which extensions are bolted or otherwise secured to the automobile 1. The looped members 6 and 7 present a comparatively stifi' cushioning device and would act with the central section 5 as a protecting bumper'it used alone though the cushioning effect would be comparatively small.

in order to increase this cushioningieffect and to protect not only the automobile against injury but to protect the person or thing struck, the cushioning structure 4 is provided. This structure consists of a number'ot' springs 10 preferably of different lengths so that the outer or contact bar 11 will be arc'shaped. The springs 10 are connected with bar 11 and bar 5 by clamping plates 12 and 13 held in place by a plurality of bolts 14;. These bars are threaded through the end loops of the respective Springs as indicated in Figures 2- and 3 and clamp said end loops firmly against the respective bars 5 and 11. The springs may be readily removed by removing the bolts 14.

If desired, rivets or other fastening means might be used instead of the bolts 14 though bolts are preferable by reason of their easy application and removal.

By providing the coil springs 10, the cushioning eti'ect produced will gradually increase until the springs have been completely collapsed and consequently, the momentum of the automobile will be gradually slowed down when an article is struck. This will prevent injury to the automobile and also 1 reduce to a minimum injury to the article struck. I

What Iclaim is 1. In a. bumper for vehicles, a supporting frame adapted to be connected with the vehicle, said supporting frame having a bar extending transversely of the vehicle. a plurality of coil springs connected with said nov bar is resiliently supported and maintained g in position by said springs.

2. In a bumper for vehicles a supporting bar connected with the vehicle, a contact bar spaced from the firstmentioned bar, a plurality of coil springs arranged between said bars, a tie rod extending through said springs ad acent each end, and means for connecting the respective tie rods with the respective bars. V c

3. In a bumper for vehicles a bar adapted to be connected with the vehicle, an arcshaped contact bar, a plurality of springs arranged between said bars, said springs being otudifi'erent' lengths with the longest ispring in the center and. the shortest at the rod arranged adjacent each of said bars and end, and means for removabiy connecting extending through the end loops of said 10 "said springs with the respective bars. sprlngs for clamping the ends of the springs In a bumper for vehicles :i bar adapted to' the respective bars, and a plurality of tobe connected with the vehicle, a contact bolts for each tie 'rod for clamping them to her spacedirom the first mentioned bar, a the respective bars. plurality of coil springs having the respeclive ends engaging the respective bars, a tie IRVING ROSENBERG. 

